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kicad/eeschema/sch_io_mgr.h

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#ifndef _SCH_IO_MGR_H_
#define _SCH_IO_MGR_H_
/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2016 CERN
* Copyright (C) 2016 KiCad Developers, see CHANGELOG.TXT for contributors.
*
* @author Wayne Stambaugh <stambaughw@gmail.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 3
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <richio.h>
#include <map>
class SCH_SHEET;
class SCH_SCREEN;
class SCH_PLUGIN;
class KIWAY;
class LIB_PART;
class LIB_ALIAS;
class PART_LIB;
class PROPERTIES;
/**
* Class SCH_IO_MGR
* is a factory which returns an instance of a #SCH_PLUGIN.
*/
class SCH_IO_MGR
{
public:
/**
* Enum SCH_FILE_T
* is a set of file types that the SCH_IO_MGR knows about, and for which there
* has been a plugin written.
*/
enum SCH_FILE_T
{
SCH_LEGACY, ///< Legacy Eeschema file formats prior to s-expression.
SCH_KICAD, ///< The s-expression version of the schematic file formats.
// Add your schematic type here.
// ALTIUM,
// etc.
};
/**
* Function FindPlugin
* returns a SCH_PLUGIN which the caller can use to import, export, save, or load
* design documents. The returned SCH_PLUGIN, may be reference counted, so please
* call PluginRelease() when you are done using the returned SCH_PLUGIN. It may or
* may not be code running from a DLL/DSO.
*
* @param aFileType is from SCH_FILE_T and tells which plugin to find.
*
* @return SCH_PLUGIN* - the plugin corresponding to aFileType or NULL if not found.
* Caller owns the returned object, and must call PluginRelease when done using it.
*/
static SCH_PLUGIN* FindPlugin( SCH_FILE_T aFileType );
/**
* Function PluginRelease
* releases a SCH_PLUGIN back to the system, and may cause it to be unloaded from memory.
*
* @param aPlugin is the one to be released, and which is no longer usable
* after calling this.
*/
static void ReleasePlugin( SCH_PLUGIN* aPlugin );
/**
* Function ShowType
* returns a brief name for a plugin, given aFileType enum.
*/
static const wxString ShowType( SCH_FILE_T aFileType );
/**
* Function EnumFromStr
* returns the SCH_FILE_T from the corresponding plugin type name: "kicad", "legacy", etc.
*/
static SCH_FILE_T EnumFromStr( const wxString& aFileType );
/**
* Function GetFileExtension
* returns the file extension for \a aFileType.
*
* @param aFileType The #SCH_FILE_T type.
* @return A wxString object containing the file extension for \a aFileType or an empty
* string if \a aFileType is invalid.
*/
static const wxString GetFileExtension( SCH_FILE_T aFileType );
/**
* Function GuessPluginTypeFromLibPath
* returns a plugin type given a footprint library's libPath.
*/
static SCH_FILE_T GuessPluginTypeFromLibPath( const wxString& aLibPath );
/**
* Function Load
* finds the requested SCH_PLUGIN and if found, calls the SCH_PLUGIN->Load(..) function
* on it using the arguments passed to this function. After the SCH_PLUGIN->Load()
* function returns, the SCH_PLUGIN is Released() as part of this call.
*
* @param aFileType is the SCH_FILE_T of file to load.
* @param aFileName is the name of the file to load.
* @param aKiway is the #KIWAY object used to access the component libraries loaded
* by the project.
* @param aAppendToMe is an existing #SCHEMATIC to append to, use NULL if a new
* #SCHEMATIC load is wanted.
* @param aProperties is an associative array that allows the caller to pass additional
* tuning parameters to the SCH_PLUGIN.
*
* @return SCHEMATIC* - caller owns it, never NULL because exception thrown if error.
*
* @throw IO_ERROR if the SCH_PLUGIN cannot be found, file cannot be found,
* or file cannot be loaded.
*/
static SCH_SHEET* Load( SCH_FILE_T aFileType, const wxString& aFileName, KIWAY* aKiway,
SCH_SHEET* aAppendToMe = NULL, const PROPERTIES* aProperties = NULL );
/**
* Function Save
* will write either a full aSchematic to a storage file in a format that this
* implementation knows about, or it can be used to write a portion of
* aSchematic to a special kind of export file.
*
* @param aFileType is the SCH_FILE_T of file to save.
*
* @param aFileName is the name of a file to save to on disk.
* @param aSchematic is the SCHEMATIC document (data tree) to save or export to disk.
*
* @param aSchematic is the in memory document tree from which to extract information
* when writing to \a aFileName. The caller continues to own the SCHEMATIC, and
* the plugin should refrain from modifying the SCHEMATIC if possible.
*
* @param aProperties is an associative array that can be used to tell the
* saver how to save the file, because it can take any number of
* additional named tuning arguments that the plugin is known to support.
* The caller continues to own this object (plugin may not delete it), and
* plugins should expect it to be optionally NULL.
*
* @throw IO_ERROR if there is a problem saving or exporting.
*/
static void Save( SCH_FILE_T aFileType, const wxString& aFileName,
SCH_SCREEN* aSchematic, KIWAY* aKiway, const PROPERTIES* aProperties = NULL );
};
/**
* Class SCH_PLUGIN
* is a base class that SCHEMATIC loading and saving plugins should derive from.
* Implementations can provide either Load() or Save() functions, or both.
* SCH_PLUGINs throw exceptions, so it is best that you wrap your calls to these
* functions in a try catch block. Plugins throw exceptions because it is illegal
* for them to have any user interface calls in them whatsoever, i.e. no windowing
* or screen printing at all.
*
* <pre>
* try
* {
* SCH_IO_MGR::Load(...);
* or
* SCH_IO_MGR::Save(...);
* }
* catch( const IO_ERROR& ioe )
* {
* // grab text from ioe, show in error window.
* }
* </pre>
*/
class SCH_PLUGIN
{
public:
//-----<PUBLIC SCH_PLUGIN API>-------------------------------------------------
/**
*
* Function GetName
* returns a brief hard coded name for this SCH_PLUGIN.
*/
virtual const wxString GetName() const = 0;
/**
* Function GetFileExtension
* returns the file extension for the SCH_PLUGIN.
*/
virtual const wxString GetFileExtension() const = 0;
/**
* Function Load
*
* loads information from some input file format that this SCH_PLUGIN implementation
* knows about, into either a new SCHEMATIC or an existing one. This may be used to load an
* entire new SCHEMATIC, or to augment an existing one if @a aAppendToMe is not NULL.
*
* @param aFileName is the name of the file to use as input and may be foreign in
* nature or native in nature.
*
* @param aAppendToMe is an existing SCHEMATIC to append to, but if NULL then this means
* "do not append, rather load anew".
*
* @param aProperties is an associative array that can be used to tell the loader how to
* load the file, because it can take any number of additional named
* arguments that the plugin is known to support. These are tuning
* parameters for the import or load. The caller continues to own
* this object (plugin may not delete it), and plugins should expect
* it to be optionally NULL.
*
* @return SCHEMATIC* - the successfully loaded schematic, or the same one as \a aAppendToMe
* if \a aAppendToMe was not NULL, and the caller owns it.
*
* @throw IO_ERROR if there is a problem loading, and its contents should say what went
* wrong, using line number and character offsets of the input file if
* possible.
*/
virtual SCH_SHEET* Load( const wxString& aFileName, KIWAY* aKiway,
SCH_SHEET* aAppendToMe = NULL, const PROPERTIES* aProperties = NULL );
/**
* Function Save
*
* will write @a aSchematic to a storage file in a format that this
* SCH_PLUGIN implementation knows about, or it can be used to write a portion of
* aSchematic to a special kind of export file.
*
* @param aFileName is the name of a file to save to on disk.
*
* @param aSchematic is the class SCHEMATIC in memory document tree from which to extract
* information when writing to \a aFileName. The caller continues to
* own the SCHEMATIC, and the plugin should refrain from modifying the
* SCHEMATIC if possible.
*
* @param aProperties is an associative array that can be used to tell the saver how to
* save the file, because it can take any number of additional named
* tuning arguments that the plugin is known to support. The caller
* continues to own this object (plugin may not delete it), and plugins
* should expect it to be optionally NULL.
*
* @throw IO_ERROR if there is a problem saving or exporting.
*/
virtual void Save( const wxString& aFileName, SCH_SCREEN* aSchematic, KIWAY* aKiway,
const PROPERTIES* aProperties = NULL );
/**
* Function EnumerateSymbolLib
*
* returns a list of #LIB_PART alias names contained within the library @a aLibraryPath.
*
* @param aAliasNameList is an array to populate with the #LIB_ALIAS names associated with
* the library.
* @param aLibraryPath is a locator for the "library", usually a directory, file,
* or URL containing one or more #LIB_PART objects.
* @param aProperties is an associative array that can be used to tell the plugin anything
* needed about how to perform with respect to @a aLibraryPath. The
* caller continues to own this object (plugin may not delete it), and
* plugins should expect it to be optionally NULL.
*
* @throw IO_ERROR if the library cannot be found, the part library cannot be loaded.
*/
virtual void EnumerateSymbolLib( wxArrayString& aAliasNameList,
const wxString& aLibraryPath,
const PROPERTIES* aProperties = NULL );
// Temporary for testing using PART_LIB instead of SCH_PLUGIN.
virtual void TransferCache( PART_LIB& aTarget );
/**
* Function LoadSymbol
*
* loads a #LIB_ALIAS object having @a aAliasName from the @a aLibraryPath containing
* a library format that this SCH_PLUGIN knows about. The #LIB_PART should be accessed
* indirectly using the #LIB_ALIAS it is associated with.
*
* @param aLibraryPath is a locator for the "library", usually a directory, file,
* or URL containing several symbols.
*
* @param aAliasName is the alias name of the #LIB_PART to load.
*
* @param aProperties is an associative array that can be used to tell the loader
* implementation to do something special, because it can take
* any number of additional named tuning arguments that the plugin
* is known to support. The caller continues to own this object
* (plugin may not delete it), and plugins should expect it to be
* optionally NULL.
*
* @return LIB_ALIAS* - if found caller shares it, else NULL if not found.
*
* @throw IO_ERROR if the library cannot be found or read. No exception
* is thrown in the case where aAliasName cannot be found.
*/
virtual LIB_ALIAS* LoadSymbol( const wxString& aLibraryPath, const wxString& aAliasName,
const PROPERTIES* aProperties = NULL );
/**
* Function SaveSymbol
*
* will write @a aSymbol to an existing library located at @a aLibraryPath. If a #LIB_PART
* by the same name already exists or there are any conflicting alias names, the new
* #LIB_PART will silently overwrite any existing aliases and/or part becaue libraries
* cannot have duplicate alias names. It is the responsibility of the caller to check
* the library for conflicts before saving.
*
* @param aLibraryPath is a locator for the "library", usually a directory, file,
* or URL containing several symbols.
*
* @param aSymbol is what to store in the library. The library is refreshed and the
* caller must update any #LIB_PART pointers that may have changed.
*
* @param aProperties is an associative array that can be used to tell the
* saver how to save the symbol, because it can take any number of
* additional named tuning arguments that the plugin is known to support.
* The caller continues to own this object (plugin may not delete it), and
* plugins should expect it to be optionally NULL.
*
* @throw IO_ERROR if there is a problem saving.
*/
virtual void SaveSymbol( const wxString& aLibraryPath, const LIB_PART* aSymbol,
const PROPERTIES* aProperties = NULL );
/**
* Function DeleteAlias
*
* deletes @a aAliasName from the library at @a aLibraryPath.
*
* If @a aAliasName refers the the root #LIB_PART object, the part is renamed to
* the next or previous #LIB_ALIAS in the #LIB_PART if one exists. If the #LIB_ALIAS
* is the last alias referring to the root #LIB_PART, the #LIB_PART is also removed
* from the library.
*
* @param aLibraryPath is a locator for the "library", usually a directory, file,
* or URL containing several symbols.
*
* @param aAliasName is the name of a #LIB_ALIAS to delete from the specified library.
*
* @param aProperties is an associative array that can be used to tell the library
* delete function anything special, because it can take any number
* of additional named tuning arguments that the plugin is known to
* support. The caller continues to own this object (plugin may not
* delete it), and plugins should expect it to be optionally NULL.
*
* @throw IO_ERROR if there is a problem finding the alias or the library or deleting it.
*/
virtual void DeleteAlias( const wxString& aLibraryPath, const wxString& aAliasName,
const PROPERTIES* aProperties = NULL );
/**
* Function DeleteSymbol
*
* deletes the entire #LIB_PART associated with @a aAliasName from the library
* @a aLibraryPath.
*
* @param aLibraryPath is a locator for the "library", usually a directory, file,
* or URL containing several symbols.
*
* @param aAliasName is the name of a #LIB_ALIAS associated with it's root #LIB_PART
* object to delete from the specified library.
*
* @param aProperties is an associative array that can be used to tell the library
* delete function anything special, because it can take any number
* of additional named tuning arguments that the plugin is known to
* support. The caller continues to own this object (plugin may not
* delete it), and plugins should expect it to be optionally NULL.
*
* @throw IO_ERROR if there is a problem finding the alias or the library or deleting it.
*/
virtual void DeleteSymbol( const wxString& aLibraryPath, const wxString& aAliasName,
const PROPERTIES* aProperties = NULL );
/**
* Function CreateSymbolLib
*
* creates a new empty symbol library at @a aLibraryPath. It is an error to attempt
* to create an existing library or to attempt to create on a "read only" location.
*
* @param aLibraryPath is a locator for the "library", usually a directory, file,
* or URL containing several footprints.
*
* @param aProperties is an associative array that can be used to tell the library
* create function anything special, because it can take any number
* of additional named tuning arguments that the plugin is known to
* support. The caller continues to own this object (plugin may not
* delete it), and plugins should expect it to be optionally NULL.
*
* @throw IO_ERROR if there is a problem finding the library, or creating it.
*/
virtual void CreateSymbolLib( const wxString& aLibraryPath,
const PROPERTIES* aProperties = NULL );
/**
* Function DeleteSymbolLib
*
* deletes an existing symbol library and returns true if successful, or if library
* does not exist returns false, or throws an exception if library exists but is read
* only or cannot be deleted for some other reason.
*
* @param aLibraryPath is a locator for the "library", usually a directory or file
* which will contain symbols.
*
* @param aProperties is an associative array that can be used to tell the library
* delete implementation function anything special, because it can
* take any number of additional named tuning arguments that the
* plugin is known to support. The caller continues to own this
* object (plugin may not delete it), and plugins should expect
* it to be optionally NULL.
*
* @return bool - true if library deleted, false if library did not exist.
*
* @throw IO_ERROR if there is a problem deleting an existing library.
*/
virtual bool DeleteSymbolLib( const wxString& aLibraryPath,
const PROPERTIES* aProperties = NULL );
/**
* Function IsSymbolLibWritable
* returns true if the library at @a aLibraryPath is writable. (Often
* system libraries are read only because of where they are installed.)
*
* @param aLibraryPath is a locator for the "library", usually a directory, file,
* or URL containing several symbols.
*
* @throw IO_ERROR if no library at aLibraryPath exists.
*/
virtual bool IsSymbolLibWritable( const wxString& aLibraryPath );
/**
* Function SymbolLibOptions
*
* appends supported SCH_PLUGIN options to @a aListToAppenTo along with internationalized
* descriptions. Options are typically appended so that a derived SCH_PLUGIN can call
* its base class function by the same name first, thus inheriting options declared there.
* (Some base class options could pertain to all Symbol*() functions in all derived
* SCH_PLUGINs.) Note that since aListToAppendTo is a PROPERTIES object, all options
* will be unique and last guy wins.
*
* @param aListToAppendTo holds a tuple of
* <dl>
* <dt>option</dt>
* <dd>This eventually is what shows up into the fp-lib-table "options"
* field, possibly combined with others.</dd>
* <dt>internationalized description</dt>
* <dd>The internationalized description is displayed in DIALOG_FP_SCH_PLUGIN_OPTIONS.
* It may be multi-line and be quite explanatory of the option.</dd>
* </dl>
* <br>
* In the future perhaps @a aListToAppendTo evolves to something capable of also
* holding a wxValidator for the cells in said dialog:
* http://forums.wxwidgets.org/viewtopic.php?t=23277&p=104180.
* This would require a 3 column list, and introducing wx GUI knowledge to
* SCH_PLUGIN, which has been avoided to date.
*/
virtual void SymbolLibOptions( PROPERTIES* aListToAppendTo ) const;
//-----</PUBLIC SCH_PLUGIN API>------------------------------------------------
/* The compiler writes the "zero argument" constructor for a SCH_PLUGIN
automatically if you do not provide one. If you decide you need to
provide a zero argument constructor of your own design, that is allowed.
It must be public, and it is what the SCH_IO_MGR uses. Parameters may be
passed into a SCH_PLUGIN via the PROPERTIES variable for any of the public
API functions which take one.
*/
virtual ~SCH_PLUGIN() { }
/**
* Class SCH_PLUGIN_RELEASER
*
* releases a SCH_PLUGIN in the context of a potential thrown exception, through
* its destructor.
*/
class SCH_PLUGIN_RELEASER
{
SCH_PLUGIN* plugin;
// private assignment operator so it's illegal
SCH_PLUGIN_RELEASER& operator=( SCH_PLUGIN_RELEASER& aOther ) { return *this; }
// private copy constructor so it's illegal
SCH_PLUGIN_RELEASER( const SCH_PLUGIN_RELEASER& aOther ) {}
public:
SCH_PLUGIN_RELEASER( SCH_PLUGIN* aPlugin = NULL ) :
plugin( aPlugin )
{
}
~SCH_PLUGIN_RELEASER()
{
if( plugin )
release();
}
void release()
{
SCH_IO_MGR::ReleasePlugin( plugin );
plugin = NULL;
}
void set( SCH_PLUGIN* aPlugin )
{
if( plugin )
release();
plugin = aPlugin;
}
operator SCH_PLUGIN* () const
{
return plugin;
}
SCH_PLUGIN* operator -> () const
{
return plugin;
}
};
};
#endif // _SCH_IO_MGR_H_
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